Home / 128,735.35-193,123.69-39,968.06

Finding the Fourth Proportional to 128,735.35, 193,123.69 and 39,968.06

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Solution

The fourth proportional to 128,735.35, 193,123.69 and 39,968.06 is: 59,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,735.35 : 193,123.69 = 39,968.06 : x
  2. Step 2: Convert to fraction form
    128,735.35/193,123.69 = 39,968.06/x
  3. Step 3: Cross multiply
    128,735.35x = 193,123.69 × 39,968.06
  4. Step 4: Simplify right side
    128,735.35x = 7,718,778,163.80
  5. Step 5: Solve for x
    x = 7,718,778,163.80/128,735.35
  6. Step 6: Final answer
    x = 59,958.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.